function obj = UnlockXe129(obj)
    L = log4m.getLogger;
    
    obj.ziSlave.unLock('2'); pause(0.1);
    obj.bz0.setDC(obj.SystemInfo.MainField.bz0);
    L.info('NMRGyroscope::UnlockXe129', sprintf('Xe129 is Unlocked. Main field is set to %5.3f V.',obj.SystemInfo.MainField.bz0));
end